Home / 157,233.72-216,979.70-85,612.44

Finding the Fourth Proportional to 157,233.72, 216,979.70 and 85,612.44

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Solution

The fourth proportional to 157,233.72, 216,979.70 and 85,612.44 is: 118,143.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,233.72 : 216,979.70 = 85,612.44 : x
  2. Step 2: Convert to fraction form
    157,233.72/216,979.70 = 85,612.44/x
  3. Step 3: Cross multiply
    157,233.72x = 216,979.70 × 85,612.44
  4. Step 4: Simplify right side
    157,233.72x = 18,576,161,547.47
  5. Step 5: Solve for x
    x = 18,576,161,547.47/157,233.72
  6. Step 6: Final answer
    x = 118,143.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.